Stretchable and magneto-sensitive strain sensor based on silver nanowire-polyurethane sponge enhanced magnetorheological elastomer

2018 ◽  
Vol 156 ◽  
pp. 528-537 ◽  
Author(s):  
Tao Hu ◽  
Shouhu Xuan ◽  
Li Ding ◽  
Xinglong Gong
Keyword(s):  
Strain Sensor ◽  
Sensitive Strain ◽  
Silver Nanowire ◽  
Magnetorheological Elastomer ◽  
Polyurethane Sponge

Highly Stretchable and Sensitive Strain Sensor Based on Silver Nanowire–Elastomer Nanocomposite

ACS Nano ◽  
2014 ◽  
Vol 8 (5) ◽  
pp. 5154-5163 ◽  
Author(s):  
Morteza Amjadi ◽  
Aekachan Pichitpajongkit ◽  
Sangjun Lee ◽  
Seunghwa Ryu ◽  
Inkyu Park
Keyword(s):  
Strain Sensor ◽  
Sensitive Strain ◽  
Silver Nanowire ◽  
Highly Stretchable

A crack-based nickel@graphene-wrapped polyurethane sponge ternary hybrid obtained by electrodeposition for highly sensitive wearable strain sensors

2017 ◽  
Vol 5 (39) ◽  
pp. 10167-10175 ◽  
Author(s):  
Fei Han ◽  
Jinhui Li ◽  
Songfang Zhao ◽  
Yuan Zhang ◽  
Wangping Huang ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Nickel Nanoparticle ◽  
Highly Sensitive ◽  
Highly Stretchable ◽  
Polyurethane Sponge

A highly stretchable and ultra-sensitive strain sensor based on a nickel nanoparticle-coated graphene polyurethane sponge (Ni@GPUS) ternary hybrid material was fabricated.

scholarly journals Development of Highly Sensitive Strain Sensor Using Area-Arrayed Graphene Nanoribbons

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1701
Author(s):  
Ken Suzuki ◽  
Ryohei Nakagawa ◽  
Qinqiang Zhang ◽  
Hideo Miura
Keyword(s):  
Graphene Nanoribbons ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Bending Test ◽  
Gauge Factor ◽  
Four Point Bending ◽  
Current Voltage ◽  
Highly Sensitive ◽  
Current Voltage Relationship

In this study, a basic design of area-arrayed graphene nanoribbon (GNR) strain sensors was proposed to realize the next generation of strain sensors. To fabricate the area-arrayed GNRs, a top-down approach was employed, in which GNRs were cut out from a large graphene sheet using an electron beam lithography technique. GNRs with widths of 400 nm, 300 nm, 200 nm, and 50 nm were fabricated, and their current-voltage characteristics were evaluated. The current values of GNRs with widths of 200 nm and above increased linearly with increasing applied voltage, indicating that these GNRs were metallic conductors and a good ohmic junction was formed between graphene and the electrode. There were two types of GNRs with a width of 50 nm, one with a linear current–voltage relationship and the other with a nonlinear one. We evaluated the strain sensitivity of the 50 nm GNR exhibiting metallic conduction by applying a four-point bending test, and found that the gauge factor of this GNR was about 50. Thus, GNRs with a width of about 50 nm can be used to realize a highly sensitive strain sensor.

A highly stretchable strain sensor based on electrospun carbon nanofibers for human motion monitoring

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 79114-79120 ◽  
Author(s):  
Yichun Ding ◽  
Jack Yang ◽  
Charles R. Tolle ◽  
Zhengtao Zhu
Keyword(s):  
Carbon Nanofibers ◽  
Strain Sensor ◽  
Human Motion ◽  
Sensitive Strain ◽  
Free Standing ◽  
Highly Stretchable ◽  
Human Motion Monitoring

A highly stretchable and sensitive strain sensor assembled by embedding a free-standing electrospun carbon nanofibers (CNFs) mat in a polyurethane (PU) matrix shows a fast, stable, and reproducible response to strain up to 300%.

Largely Deformable and Highly Sensitive Strain Sensor Using Carbon Nanomaterials

2017 ◽  
Author(s):  
Kanji Yumoto ◽  
Ken Suzuki ◽  
Hideo Miura
Keyword(s):  
Aspect Ratio ◽  
Growth Condition ◽  
Electrical Resistance ◽  
Carbon Nanomaterials ◽  
Flexible Substrate ◽  
Strain Sensor ◽  
Sensitive Strain ◽  
Synthesis Process ◽  
Pressure Sensitivity ◽  
Highly Sensitive

A new type tactile sensor with spatial resolution less than 1 mm and the minimum pressure sensitivity less than 10 kPa was proposed by applying MWCNTs (Multi-Walled Carbon Nanotubes). The sensor was embedded into a highly deformable flexible substrate (PDMS: Polydimethylsiloxane) and the obtained gauge factor of the developed sensor was about 5. Since the electronic properties of MWCNTs vary drastically depending on their deformation under mechanical stress, it is important to make appropriate aspect ratio of MWCNTs for improving their stress-sensitivity. The aspect ratio of MWCNTs are mainly dominated by their growth condition such as the average thickness of catalyst layer, growth temperature, pressure of resource gases and so on. Thus, the optimum growth condition was investigated for forming the MWCNTs with high aspect ratio, in other words, high pressure sensitivity. In addition, in this study, the authors fabricated high quality carbon nano-materials to develop highly sensitive strain sensor. A thermal CVD synthesis process of MWCNTs was developed by using acetylene gas. After the synthesis of MWCNTs, flexible isolation material (PDMS) was coated around the grown MWCNT. Then, the interconnection film was deposited by sputtering. After that, PDMS was coated again to fabricate an upper protection layer. Finally, the bottom interconnection layer was sputtered and patterned. The change of the electrical resistance of the grown MWCNTs was measured by applying a compression test in the load range from 0 to 10 mN. It was found that the electrical resistance of the MWCNTs bundle increased almost linearly with the applied compressive load and this sensor showed the high load sensitivity of 10 mN that is higher than human fingers.

Ultra-Sensitive Strain Sensor Using High Density Self-Aligned Nano-Cracks

2020 ◽  
Author(s):  
Myung-Kun Chung ◽  
Jae-Young Yoo ◽  
Jae-Shin Lee ◽  
Min-Seung Jo ◽  
Kwang-Wook Choi ◽  
...  
Keyword(s):  
Strain Sensor ◽  
High Density ◽  
Sensitive Strain
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